Troubleshooting SiBE07-618_C64 Service Diagnosis4.4 Fan Motor (AC motor) or Related AbnormalityRemoteControllerDisplayA6Method ofMalfunctionDetectionThe rotation speed is detected by the Hall IC while the fan motor is operating. The rotationspeed determines the error.MalfunctionDecisionConditionsThe detected rotation speed does not reach the demanded rotation speed of the target tap, andis less than 50% of the maximum fan motor rotation speed.SupposedCauses Layer short inside the fan motor winding Breaking of wire inside the fan motor Breaking of the fan motor lead wires Defective capacitor of the fan motor Defective indoor unit PCBTroubleshootingCheck No.16Refer to P.100NONONOCheck No. 16Check Hall ICNONONOYESYESYESYESYESYES(R11411)CautionReplace the fan motor or theindoor unit PCB.Replace the fan motor.Replace the indoor unit PCB.Replace the capacitor.(Replace the indoor unit PCB.)Replace the fan motor.Replace the fan motor.Replace the indoor unit PCB.Does the fan rotate?Is there an output?Is it the rated voltage? ∗Does the fan rotatesmoothly?Is it the rated voltage? ∗Is there continuity?Start operation.Turn off the power supply androtate the fan by hand.Check the fan motor voltage.Turn the power on and check thefan motor voltage. (immediatelyafter restart)Check the capacitor's continuity.Be sure to turn off the power switch before connecting or disconnectingconnectors, or parts may be damaged.∗ Measure the voltagebetween the red and blacklead wires of the fan motor,and check if the maximumvoltage reaches the ratedvoltage.
